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Install and maintain

Shut down the controller for automated boot media recovery - AFF A70 and AFF A90

Contributors netapp-lisa
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Shut down the impaired controller in your AFF A70 or AFF A90 storage system to prevent data loss and maintain system stability during the automated boot media recovery process.

The automated boot media recovery process is supported only in ONTAP 9.17.1 and later. If your storage system is running an earlier version of ONTAP, use the manual boot recovery procedure.

To shut down the impaired controller, you must determine the status of the controller and, if necessary, take over the controller so that the healthy controller continues to serve data from the impaired controller storage.

About this task

  • If you have a SAN system, you must have checked event messages (cluster kernel-service show) for the impaired controller SCSI blade. The cluster kernel-service show command (from priv advanced mode) displays the node name, quorum status of that node, availability status of that node, and operational status of that node.

    Each SCSI-blade process should be in quorum with the other nodes in the cluster. Any issues must be resolved before you proceed with the replacement.

  • If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in quorum or a healthy controller shows false for eligibility and health, you must correct the issue before shutting down the impaired controller; see Synchronize a node with the cluster.

Steps

  1. If AutoSupport is enabled, suppress automatic case creation by invoking an AutoSupport message:

    system node autosupport invoke -node * -type all -message MAINT=<# of hours>h

    The following AutoSupport message suppresses automatic case creation for two hours:

    cluster1:> system node autosupport invoke -node * -type all -message MAINT=2h

  2. Disable automatic giveback:

    1. Enter the following command from the console of the healthy controller:

      storage failover modify -node impaired_node_name -auto-giveback false

    2. Enter y when you see the prompt Do you want to disable auto-giveback?

  3. Take the impaired controller to the LOADER prompt:

    If the impaired controller is displaying…​ Then…​

    The LOADER prompt

    Go to the next step.

    Waiting for giveback…​

    Press Ctrl-C, and then respond y when prompted.

    System prompt or password prompt

    Take over or halt the impaired controller from the healthy controller:

    storage failover takeover -ofnode impaired_node_name -halt true

    The -halt true parameter brings you to the LOADER prompt.
What's next

After you shut down the impaired controller, you replace the boot media.